VDB-128393 · CVE-2018-8920 · SA_18_14

Synology DiskStation Manager up to 6.1.6 Log Exporter CSV injection

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.9	$0-$5k	0.00

Summaryinfo

A vulnerability classified as critical has been found in Synology DiskStation Manager up to 6.1.6. Affected by this issue is some unknown functionality of the component Log Exporter. The manipulation as part of CSV leads to injection. This vulnerability is listed as CVE-2018-8920. The attack may be initiated remotely. There is no available exploit. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Synology DiskStation Manager up to 6.1.6 (Network Attached Storage Software). It has been rated as critical. This issue affects some unknown processing of the component Log Exporter. The manipulation as part of a CSV leads to a injection vulnerability. Using CWE to declare the problem leads to CWE-74. The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Improper neutralization of escape vulnerability in Log Exporter in Synology DiskStation Manager (DSM) before 6.1.6-15266 allows remote attackers to inject arbitrary content to have an unspecified impact by exporting an archive in CSV format.

The bug was discovered 12/24/2018. The weakness was presented 12/24/2018 (Website). The advisory is shared at synology.com. The identification of this vulnerability is CVE-2018-8920 since 03/22/2018. The exploitation is known to be easy. The attack may be initiated remotely. Required for exploitation is a simple authentication. Neither technical details nor an exploit are publicly available. MITRE ATT&CK project uses the attack technique T1055 for this issue.

Upgrading to version 6.1.6-15266 eliminates this vulnerability.

See VDB-128390 and VDB-128392 for similar entries. Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Type

Network Attached Storage Software

Vendor

Synology

Name

DiskStation Manager

Version

License

commercial

Website

Vendor: https://www.synology.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.9

VulDB Base Score: 4.7
VulDB Temp Score: 4.5
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.2
NVD Vector: 🔍

CNA Base Score: 5.9
CNA Vector (Synology Inc.): 🔍

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Injection
CWE: CWE-74 / CWE-707 / CWE-20
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: DiskStation Manager 6.1.6-15266

Timelineinfo

03/22/2018 🔍
12/24/2018 +277 days 🔍
12/24/2018 +0 days 🔍
12/24/2018 +0 days 🔍
12/25/2018 +1 days 🔍
01/15/2025 +2213 days 🔍

Sourcesinfo

Vendor: synology.com

Advisory: SA_18_14
Status: Confirmed
Confirmation: 🔍

CVE: CVE-2018-8920 (🔍)
GCVE (CVE): GCVE-0-2018-8920
GCVE (VulDB): GCVE-100-128393
See also: 🔍

Entryinfo

Created: 12/25/2018 10:25
Updated: 01/15/2025 04:58
Changes: 12/25/2018 10:25 (60), 04/24/2020 09:36 (2), 06/22/2023 07:00 (4), 06/22/2023 07:08 (11), 01/15/2025 04:58 (17)
Complete: 🔍
Cache ID: 216::103

Several companies clearly confirm that VulDB is the primary source for best vulnerability data.